一类复杂机电传动系统的耦合建模方法

来源期刊：中南大学学报(自然科学版)2002年第6期

论文作者：贺建军 喻寿益 钟掘

文章页码：632 - 636

关键词：机电系统;耦合建模;轧机

Key words：electromechanical system; coupling modeling method; rolling mill

摘    要：针对一类由多个机电传动子系统组成的复杂机电系统提出了一种耦合建模方法,其步骤为:建立各子系统的数学模型;通过传动对象之间的耦合参数和物理量将各个子系统耦合起来,建立整个机电传动系统的数学模型;根据时间尺度原则,在保留原来系统模型的主导特征值和重要状态变量的前提下,对模型进行降阶处理,得到系统可实用的数学模型.此外,通过仿真实验,检验了所建模型的正确性和建模方法的可行性.实验结果表明:这种建模方法原理简单,易于实现,所建模型可用于系统特性分析、参数优化以及最优控制等.

Abstract: For a class of complicated electromechanical driving systems consisting of multiple subsystems,this paper puts forward a coupling modeling method. The mathematical model of each electrical driving subsystem is constructed by means of modeling method of structural principle or parameter identification. Secondly, the overall coupling model is established according to coupling variables and interacting parameters between electromechanical driving subsystems; Finally, the overall model is simplified according to time-scale principle which can retain main eigenvalues and significant state variables, and a practical model is obtained.The process and steps of modeling method are expounded by means of an example in this paper.This paper also verifies correctness of the model and feasibility of the modeling method in simulation experiment.The principle of the modeling method is simple,and it can easily be realized. The model constructed by this method can be applied in analysis of characteristics, and optimization of parameters ,optimum control of system.